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Housestaff Projects

After conducting research projects with their respective mentors, many residents choose to create posters and abstract presentations for local, regional, and national competition submission. The American College of Physicians offers an annual Colorado meeting and a local Denver meeting every year at which many residents present research abstracts. In addition, there is a Department of Medicine Research Day with excellent participation by and many award winners among the housestaff. Divisions within the Department of Medicine support residents to present at national subspecialty meetings. Each year, our residents receive recognition and awards at local, state and national meetings.


 Examples of Current Residents' Research Projects by subspecialty:



  1. American Heart Association: Quality of Care and Outcomes Research  (AHA/QCOR 2013):Baltimore, MD.  5/2013The Relationship between Readmission Cost and Total Cost Over Time for Heart Failure.
  2. Changstrom BG. Incidental discovery of CML after sudden cardiac arrest due to left ventricular non-compaction and intracranial hemorrhage. Prepared for submission to AMSSM meeting, 2014.
  3. Fleeman BE, Beldner S, Katz D, Steckman D, Aleong R, Nguyen D, Schuller J, Sung R, Tzou WS, Varosy P, Sauer WH. Incidence and Predictors of Pleuritic Chest Discomfort following Ablation of Atrial Fibrillation. J Am Coll Cardiol. 2013;61(10_S).
  4. Tzou W, Foley TR, Nguyen DT, Aleong RG.  Infra-Hisian atrioventricular block. Card Electrophysiol Clin. 2012 Dec 4 (4): 645-649.
  5. Page RL, Foley TR, Lindenfeld J.  Delayed wound healing in heart failure.  Submission pending.
  6. Foley TR, Lindenfeld J.   Progression of aortic aneurysms in cardiac transplant patients: case series and review of the literature
  7. Moss TJ, Lake DE, Moorman JR. Local dynamics of heart rate: detection and prognostic implications. Heart Rhythm. 2013 (under review).
  8. DeMazumder D, Lake DE, Cheng A, Moss TJ, Guallar E, Weiss RG, Jones S, Tomaselli GF, Moorman JR.  Dynamic analysis of cardiac rhythms for discriminating atrial fibrillation from lethal ventricular arrhythmias.  Circ Arrhythm Electrophysiol. 2013 May 16.
  9. Peters, L. “Emergent radiofrequency catheter ablation of ventricular arrhythmias can be safely and effectively performed in patients with severe heart failure”. (Accepted at HFSA National 2013)
  10. Daugherty SL, Thompson LE, Kim S, Rao SV, Subherwal S; Tsai TT, Messenger JM, Masoudi FA. Patterns of Use and Comparative Effectiveness of Bleeding Avoidance Strategies in Men and Women Following Percutaneous Coronary Interventions: An Observational Study from the National Cardiovascular Data Registry®. J Am Coll Cardiol. 2013;61(20):2070 doi:10.1016/j.jacc.2013.02.030


  1. ZhaoX, LorencH, StephensonH, WangYJ, WitherspoonD, KatzenellenbogenB, PfaffD, VasudevanN.“Thyroid hormone can increase estrogenmediated transcription from a consensus estrogen response element in neuroblastoma cells.” Proc Natl Acad Sci USA. 2005 March 29; 102(13):4890–4895.PMID:15778291.


  1. Mason M, Siegel C. Do Inflammatory Bowel Disease Therapies Cause Cancer? Inflamm Bowel Dis. 2013 May;19(6):1306-21. doi:10.1097/MIB.0b013e3182807618.
  2. Regner E. ACG Poster Accepted: An Uncommon Cause of Upper Gastrointestinal Bleeding in a Post-Liver Transplant Patient: Hepatic Arteriojejunal Fistula
  3. Regner E. ACG Poster Accepted: IBD Surveillance Colonoscopies Require More Time and Medication Than Screening Colonoscopies for Non-IBD Patients
  4. Regner E. Research: Studying Intestinal Intra-Epithelial Lymphocytes (IELs) in Colonic Tissue; characterizing the cells and determining extent of IEL involvement in extra-intestinal manifestations of IBD.
  5. Brimhall B. Research: Predictors of Sub-Optimal Bowel Preparation. University of Colorado, Aurora, CO. Oct 2012 – Present.
  6. Brimall B. Research: Medical Marijuana. University of Colorado, Aurora, CO. Oct 2013 – Present
  7. Brimhall B. Research: Eternal Stents for Gastric Outlet Obstruction. University of Utah, Salt Lake City, UT. Jan 2010 – April 2011.
  8. Brimhall B, Hankins SC, Austin GL. Medicare patients under the age of 65 years and Medicaid patients are more likely to have a suboptimal bowel preparation for colonoscopy. Manuscript in preparation.
  9. Brimhall B, Hankins SC, Austin GL. Effect of a low-volume compared to a high-volume polyethylene glycol bowel preparation solution on prep quality, procedure times, and adenoma detection rates. Manuscript in preparation.
  10. Gerich ME, Isfort RW, Brimhall B, Siegel CA. Medical marijuana for digestive disorders: High time to prescribe? The American Journal of Gastroenterology. 2014; in press.
  11. Brimhall B, Adler DG. Enteral stents for malignant gastric outlet obstruction. Gastrointestinal Endoscopy Clinics of North America. 2011; 3:389-403.
  12. Brimhall B, Adler DG. Esophageal stenting for the treatment of malignant dysphagia in patients with esophageal cancer. Hospital Practice. 2010; 38:94-102.
  13. Brimhall B, Hankins SC, Austin GL. Medicare Patients Under the Age of 65 Years and Medicaid Patients are More Likely to have a Suboptimal Bowel Preparation for Colonoscopy. Gastroenterology. 2014;146(5):S-34-S-35. Oral Presentation at Digestive Diseases Week, May 2014, Chicago, IL.
  14. Brimhall B, Hankins SC, Austin GL. Effect of a Low-volume Compared to a High-volume Polyethylene Glycol Bowel Preparation Solution on Prep Quality, Procedure Times, and Adenoma Detection Rates. Gastroenterology. 2014;146(5):S-552. Poster Presentation at Digestive Diseases Week, May 2014, Chicago, IL.
  15. Jensen-Otsu E, Ward EK, Mitchell B, Schoen JA, Rothchild K, Mitchell NS, Austin GL. The Effect of Medicaid Status on Weight Loss, Hospital Length of Stay, and 30-Day Readmission After Laparoscopic Roux-en-Y Gastric Bypass Surgery. Obes Surg. 2014 Jul 15. [Epub ahead of print]. PMID: 25022673
  16. Clemons J, Dunn D, Feinberg L. (August 2012) Pneumatosis Intestinalis in a patient with Scleroderma. Presented at Mountain West Regional Meeting of the Society of General Internal Medicine, 2012 Denver.
  17. Gawron AJ, Veerappan A, McCarthy ST, Kankanala V, Keswani RN. “Impact of an Incomplete Colonoscopy Referral Program on Recommendations After Incomplete Colonoscopy.” Digestive Diseases and Sciences. 2013 Mar 2
  18. Kankanala V, Austin G. “A Diagnostic Colonoscopy Is Associated With a Lower Adenoma Detection Rate Despite Longer Withdrawal Times Compared to a Screening or Surveillance Colonoscopy.” Gastrointestinal Endoscopy. 2013; 77(5): AB505. 
  19. Kankanala V, McCarthy ST, Gawron AJ, Keswani RN. “Adherence to Recommendations after Incomplete Colonoscopy in a Large Academic Gastroenterology Practice.” Gastrointestinal Endoscopy. 2011; 73(4): AB215.
  20. McCarthy ST, Kankanala V, Gawron AJ, Keswani RN. “Diagnostic Yield of Complete Colon Evaluation after Initial Incomplete Colonoscopy: A Comparison of Repeat Colonoscopy versus Barium Enema.” Gastrointestinal Endoscopy. 2011; 73(4): AB215.
  21. Kankanala V “A Diagnostic Colonoscopy Is Associated With a Lower Adenoma Detection Rate Despite Longer Withdrawal Times Compared to a Screening or Surveillance Colonoscopy.”  May 2013. Digestive Disease Week, Orlando, FL
  22. Kankanala V “Complications of a Paraesophageal Hernia Repair Performed for Gastric Volvulus: A Patient Presentation.”  September 2011. Presented at GI Grand Rounds, University of Colorado Anschutz Medical Campus, Denver CO
  23. Kankanala V “Adherence to Recommendations after Incomplete Colonoscopy in a Large Academic Gastroenterology Practice” May 2011. Digestive Disease Week, Chicago, IL
  24. Kankanala V “Nutritional Considerations in Patients with Cirrhosis” December 2009. Presented at Department of Integrative Medicine, Northwestern University Feinberg School of Medicine, Chicago IL
  25. New S, Stratton K, Benson A, Bambha K. Associations between TEG and Cirrhosis Severity. Oral Presentation at the Young Investigators Forum/Controversies in Transplantation conference. Breckenridge, CO. February 2013

 General Medicine

  1. Lo D, Paniagua MA, and Thomas DR. Missed Opportunities: Nursing Home Providers’ Ability to Identify and Recognize Depressive Symptoms. JAMDA (2010)11;9:680-683.
  2. Lo D, Desai AK. Nutrition and Occupational Performance in the Older Adult. In Barney KF and Perkinson MA (Eds.), Geriatric Occupational Therapy: Supporting Meaningful Living Through Collaborative Practice. (under contract with Mosby, Inc.).
  3. Wolk DA, Schacter DL, Lygizos M, Sen NM, Chong H, Holcomb PJ, Daffner KR, & Budson AE  (2007). ERP correlates of Remember/Know decisions: Association with the late posterior negativity.  Biological Psychology, 75(2), 131-5.
  4. Wolk DA, Schacter DL, Lygizos M, Sen NM, Holcomb PJ, Daffner KR, & Budson AE  (2006). ERP correlates of recognition memory: Effects of retention interval and false alarms.  Brain Research, 1096, 148-162.
  5. Bish JP, Pendyal A, Ding L, Ferrante H, Nguyen V, McDonald-McGinn DM, Zackai EH, Simon TJ. Specific Cerebellar Reductions In Children With 22q11.2 Deletion Syndrome. Neuroscience Letters, 2006;399(3):245-8
  6. Pendyal A, Berl MM, Ritzl EK, Rosenberger L, Weber DA, & Gaillard WD. Effect of language task difficulty on cortical activation in normally developing pediatric subjects. Pediatric Academic Societies. E-PAS2007:618453.3.
  7. Peters, L.“Can Treatment of a Common Medical Illness Exacerbate an Underlying Malignancy?” (Presented at SGIM National 2013, ACP Colorado 2013)                         
  8. Stump, B., Klugman, C., & Thornton, B. Last hours of life: encouraging end-of-life conversations. Journal of Clinical Ethics, 19(2): 150-159
  9. Klugman, C. & Stump, B. Last hours of life: a qualitative prospective examination. American Society for Bioethics & Humanities. Washington, DC
  10. AndersonM,WangYJ.“Morethanskindeep:Onenosocomialinfectionnottomiss.”




  1. Patil T, Camidge R. Research: Attempt to re-examine the criteria we use to determine progression of lung cancer and the question we are investigating is whether patients with metastatic non-small cell lung cancer who have specific oncogene mutations that are amenable to targeted therapy show different rates of response and progression depending on the anatomical location (lung, pleura, or lymph node).
  2. Trabectedin: Novel Insights in the Treatment of Advanced Sarcoma. Lopez JP, Gajdos C, Elias A; Curr Oncol Rep. 2014 Jun.
  3. Idelalisib for the Treatment of Indolent Non-Hodgkin's Lymphoma. Lopez JP, Jimeno A,; Drugs Today. 2014 Mar 13.
  4. Clemons J, Gao D, Naam M, Breaker K, Garfield D, Flaig TW. Thyroid Dysfunction in Patients Treated with Sunitinib or Sorafenib. Clin Genitourin Cancer. 2012;10:225-31.
  5. Clemons J, Gao D, Flaig TW. Low-Dose Diethylstilbestrol for the Treatment of Advanced Prostate Cancer. Urol Oncol. 2013;31:198-204.
  6. McKean M, Purcell WT. A Newly Discovered Liver Mass in a 65 Year-Old Woman. Oncology (Williston Park). 2013 Nov;27(11):1162-3, C3.
  7. Patil T, Camidge R. Research: Re-Examining the Critieria Used to Determine Progression of Lung Cancer; Do patients with metastatic non-small cell lung cancer who have specific oncogene mutations that are amenable to targeted therapy show different rates of response and progression depending on the anatomical location (lung, pleura, or lymph node)?
  8. Andrew James Weickhardt MBBS, DMedSc, Benjamin Scheier MD, Joseph Malachy Burke MD, Gregory Gan MD, Xian Lu MSc, Robert Charles Doebele MD PhD, Paul A. Bunn Jr. MD, Laurie E. Gaspar MD MBA, Brian D. Kavanagh MD MPH, D. Ross Camidge MD PhD. 2012.  Local ablative therapy of oligoprogressive disease prolongs disease control by tyrosine kinase inhibitors in oncogene addicted non-small cell lung cancer.  Journal of Thoracic Oncology.  (Accepted for publication)
  9. American Society of Clinical Oncology (ASCO): Chicago, IL.  6/2012 Continuation of EGFR/ALK inhibition after local therapy of oligoprogressive disease in EGFR mutant (Mt) and ALK+ non-small cell lung cancer (NSCLC).
  10. Johnson, A., Christenson, S., Teixeira, P. Outpatient and inpatient management of a patient with Waldenstrom’s Macroglobulinemia and hyperviscosity syndrome.  Rick Albert Poster Session, Denver Health.  Denver, Colorado, June 2013
  11. Johnson, A., Matous, J.  “Doc, I think I have a hernia”: An unusual presentation of Mantle Cell Lymphoma.  Proc. of Colorado ACP annual meeting, Denver, Colorado, May 2013
  12. Johnson, A, McKinnon, B. Post-labyrinthectomy cochlear implantation in a patient with Bilateral Langerhans’ Cell Histiocytosis of the Temporal Bone; Proc. Asia Pacific Symposium for Cochlear Implants and Related Sciences, Singapore, October 2009
  13. Kanakala, V. “The Role of PSA in Prostate Cancer Screening” July 2009. Presented at Department of Internal Medicine, Northwestern University Feinberg School of Medicine, Chicago IL
  14. Lammers, A., Weekes, CD. Refameitinib. Drugs of the Future. 2013, 38(1): 19-26

 Infectious Diseases

  1. Brimhall B, Research: Impact of Education and Large-Scale Programs on the Prevalence of Bed-Net Use in Ghana. University of Utah. Apr 2008-Jun 2009.
  2. Brimhall B, Bhide M. A Snake's Kiss Can Be as Deadly as its Bite. Poster presentation at Society for GIM Natinal Meeting. Apr 2013, Denver, CO.
  3. Brimhall B, Oral Presentation: The Impact of Education and Large-Scale Programs on the Prevalence of Bed-Net Use in Ghana. Global Health Conference. Apr 2009. Seattle, WA.
  4. Changstrom BG, Brittan M, Somme S, Fenton L, Brumbaugh DE, Soden JS. Heterotaxy and Spenlic Infarction as a Rare Presentation of Suspected Abdominal Abscess. **Prepared for submission—Not Submitted**
  5. Changstrom BG, Gahan TF, Gilchrist MJR, Gill JS. Statewide Surveillance and Forecasting of West Nile Virus Activity in Iowa. Presented at the 4th biannual meeting for the International Conference on Emerging Infectious Diseases, April 2006.
  6. Collins J, Piriou E, Chelimo K, Rochford R, Ovsyannikova IG, Vulule J, Poland GA, Moormann AM.  Malaria Infection and Measles Vaccination Efficacy: Cause for Concern?  Poster presentation at the 59th annual meeting of the American Society of Tropical Medicine and Hygiene.  Atlanta, GA
  7. Collins J, Kimmel RJ, Ovsyannikova IG, Vulule J, Poland GA, Moormann AM.  Measuring measles virus antibodies using a flow cytometry-based suspended microsphere assay.  Poster presentation at the 56th annual meeting of the American Society of Tropical Medicine and Hygiene.  Philadelphia, PA.
  8. Collins J, Reves R, Belknap B.  The risk of tuberculosis among students in the U.S. on an exchange visa.  Manuscript in process.
  9. Puskovic V, Wolfe D, Wechuck J, Krisky D, Collins J, Glorioso JC, Fink DJ, Mata M.  HSV-mediated delivery of erythropoietin restores dopaminergic function in MPTP-treated mice.  Mol Ther. 2006 Nov;14(5):710-5.


  1. Oberndorfer TA, Simmons AN, McCurdy D, Irvine Z, Strigo I, Matthews SC, Yang TT, Irvine Z, Kaye WH. Greater anterior insula activation during anticipation of food images in women recovered from anorexia nervosa versus controls. Psychiatry Research: Neuroimaging. 214(2):132-41. 
  2. Oberndorfer TA, Frank GW, Simmons AN, Wagner A, McCurdy D, Fudge J, Yang TT, Paulus MP, Kaye WH. Altered insula response to sweet taste processing after recovery from anorexia and bulimia nervosa. American Journal of Psychiatry. 2013. 70(10):1143-51.

 Pulmonary and Critical Care

  1. Lammers, A., Allyn, R. (2012, November and 2013, May). Taking the wind out of your sail in the middle of a perfect storm: A tale of Dyspnea and Thrombus. Poster Presented at: Regional Society of General Internal Medicine (SGIM) and Local American College of Physicians (ACP) Denver, CO
  2. Lygizos MI, Yang Y, Altmann CJ, Okamura K, Andres Hernando A, Perez MJ, Smith LP, Koyanagi DE, Gandjeva A, Bhargava R, Tuder RM, Faubel S, Schmidt EP.  Heparanase inhibition prevents acute kidney injury during experimental sepsis.  In review.  
  3. Lygizos M, Shenoi SV, Brooks RP, Bhushan A, Brust JCM, Zelterman D, Deng Y, Northrup V, Moll AP, Friedland GH.  Natural Ventilation reduces high TB transmission risk in traditional homes in rural KwaZulu-Natal, South Africa.  In review. 
  4. Palacios E, Franke M, Munoz M, Hurtado R, Dallman R, Chalco K, Guerra D, Mestanza L, Llaro K, Bonilla C, Sebastian JL, Bayona J, Lygizos M, Anger H, Shin S.  HIV-positive patients treated for multidrug-resistant tuberculosis: clinical outcomes in the HAART era. (2012). Int J Tuberc Lung Dis, 16(3):348-354.  
  5. Brust JCM, Lygizos M, Chaiyachati K, Scott M, van der Merwe TL, Moll AP, Li X, Loveday M, Bamber S, Lalloo UG, Friedland GH, Shah S, Gandhi NR.  Culture conversion among HIV co-infected multidrug-resistant tuberculosis patients in Tugela Ferry, South Africa (2011).  PLoS One, 6(1):e15841.
  6. Palacios E, Dallman R, Munoz M, Hurtado R, Chalco K, Guerra D, Mestanza L, Llaro K, Bonilla C, Drobac P, Bayona J, Lygizos M, Anger H, Shin S. (2009) Drug-resistant tuberculosis and pregnancy: Management and treatment of outcomes of 38 cases in Lima, Peru.  Clinical Infectious Diseases, 48(10):1413-9.

 Quality Improvement

  1. Clemons J, Hansen M, Mann A, Cheung D, Perica K, Cumbler E, Virapongse A. The “PAS,” present, and future of admission medication reconciliation. ACP Local Chapter Scientific Meeting, Denver, CO. May 2014. Poster Presentation. Winning abstract, Quality Improvement category.
  2. Jones C, Clemons J, Cumbler E, Honigman B, DeWalt D, Coleman E, Burke R, Wald H. Hospital to home health care transitions: a gap analysis of targets for quality improvement. JGIM. 2014;29(Supplement 1): S109-110.
  3. Schmitz K, Kempker R, Tenna A, Stenehjem E, Abebe E, Tadesse L, Jirru E, Blumberg H. Research: Effectiveness of a Multimodal Hand Hygiene Campaign and Obstacles to Success in Addis Ababa, Ethiopia. AntiMicrobial Resistance & Infection Control 2014, 3:8
  4. Karlsberg D, Pierce R. Anonymity: An Impediment to Performance in Healthcare. Health Services Insights 2014:7 19-23
  5. Mason MK. Looking For Trouble - Patient Preference Misdiagnosis and Overtesting: A Teachable Moment. JAMA Intern Med. 2014 Aug 11. doi: 10.1001/jamainternmed.2014.3429.